Tensioning device for saws



Nov. s, 1923. A 1,473,468

A. COTE TENsIoNING DEVICE FOR sAws Filed June' 12. 1922 @Holz nu! and frame saws.

Patented UNITED.srATEsi Y nnrnonsn corner EEL Rivnn Nnwnnnitswicncnnnnn. 27j I Y TnNs'IoNINe :envien Fons'nwsf.,

ject of the Kingof GreatV Britaimresiding at Eel River. Vin the Province 'of New Brunswlck, Canada, vhave invented certain ynew and useful Improvementsin Tensio'ning De--y vices'for Saws; and I do-.herebydeclare that the following is a full,xclear, and Vexact description of 'the inventiom such as will enable others skilled inthe 'art to which it appertains to make and .use the same. Y

This invention relates 'to new and useful improvements in Atensioning devices for saws,`and is particularly applicable to buck The-primary object of provide means ofthe character indicated above that is dura-ble, Yeliicient and readily applicable to a saw frame.

A lfurther object of the invention resides` in the construction of a frame that decreases the action ofmoisture upon the saw blade. In a frame composed entire-ly of Wood, all the moisture absorbed by the wood can vbe conducted through the frame to the saw -bladeupon which it has a detrimental effect. In the present invention, a portion of theframe consists ofmetal, which is incapable of conducting moisture to the blade, and `which further tends to avoid warp-ing of the frame.

' Further objects and advantages of the in? ventiony will appear as the description con,- tinues. Y

A preferred embodiment is shown' inthe accompanying drawings in which: r

Figurel is a side elevation of a buck saw having my device applied thereto;

Figure 2 is a plan view of Figure l;

Y Figure is a detail perspective view; and,

Figure 4 is a section taken onV the line 4 4 of Figure l. i

The frame of the saw side bars l, 2 pivoted tothe ends of a body portion 3. The body portion includes al top 4 and connecting straps 5, a pair of which is secured to each end ofthe top and two opposite sides of the side members 1,2. The union between a pair of connecting straps and a sidebar consists of a bolt 6 passing through the side member and the straps,V Y

the invention is to*V consists of a pair of Application medium it', 19722..v serial n. mii/fria V held place b-yfa'nut 7; thus providingfai I i I pivotal connection ,between the straps... and] thfe'sides.l ,A ratchet or-toothed memberlis,V

secured'to oneend vof theitop'of the freine;

by a plurality of screws orsimilarfdevices .9,"1-

and is intended for:permanentk position in"` this relation.l A similar device lO is securedY to the4 otherend `of the t'o-p'by'means-of an 'Y integral portion embracing the topl. and a.v pair'of screws 11. YThis member mayv be members employed. f Y Y readily moved from one position to another,A Y

because of the small'numberof fastening Y link maybe raised out ofengagement with: the notch member. It will vreadily'ber ob.-l

served that thetension `on the saw bladeis.

governedlby the Aparticular notches in which the links l2 are'inserted. 'In thel event that Y l an extraordinary long saw blade is used, the Y no-tched ,member 12 may be readily moved V Yinwardly upon -thevframe top7 maniputo be understood that various details ofconf Y d struction may be made within the scope of -j Vtheappendedclaims.v V;. i

j VHaving thus fully described-the invention;

Letters Patent` is zl.. AV saw frame comprising a pairofside f bars, a top memberbetween and spaced from said bars, metallic straps connecting saidy y topwiththe barsgfthe straps being pivotedv:` yto the bars, toothed members lixe'd'to th'ef Y ends ofthe top', and links 'attachedk to the. g' 90 side members-and adjustably engageabl with the toothed membersr, Y Y.

what I claim as new and Vdesiretoi protect' 2. A sawframe comprising a pair of. sideV Y bars, atop member between and spaced from said bars, metallic strapsl connectingsaid top with the bars,V the 'straps being pivoted to` the bars, toothed members yacb'ustablyV xed to thek ends Vof the top,-A and links at# tachedY` tothe side members andA adjustably en ageable with the toothed members.V Y

n witness whereof` I have''hereunto set.

my hand. Y y' n Y L ALPHONSECT; l 

